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CATEGORY <br />PARAMETER <br />ANALYSIS TYPE <br />UNITS <br />JAN <br />FEB <br />MAR <br />APR <br />MAY <br />JUN <br />JUL <br />AUG <br />SEP <br />OCT <br />NOV <br />DEC <br />Date <br />2/16/2011 <br />5/5/2011 <br />8/26/2011 <br />12/6/2011 <br />Water Elevation <br />FT <br />6266.93 <br />6271.24 <br />6269.18 <br />6268.19 <br />Water Level <br />FT <br />41.37 <br />37.06 <br />39.12 <br />40.11 <br />PHYSICAL <br />CONDUCTIVITY <br />LAB <br />UMS /CM <br />2280 <br />2260 <br />2360 <br />2350 <br />PH <br />LAB <br />S.U. <br />9.05 <br />8.6 <br />8.58 <br />8.52 <br />CATIONS <br />CALCIUM <br />DISSOLVED <br />MG /L <br />7.7 <br />MAGNESIUM <br />DISSOLVED <br />MG /L <br />4.7 <br />SODIUM <br />DISSOLVED <br />MG /L <br />469 <br />ANIONS <br />BICARBONATE <br />AS HCO3 <br />MG /L <br />596 <br />CARBONATE <br />AS CO3 <br />MG /L <br />43 <br />CHLORIDE <br />NOT APPLICABLE <br />MG /L <br />39 <br />SULFATE <br />NOT APPLICABLE <br />MG /L <br />570 <br />PRIMARY <br />CADMIUM <br />DISSOLVED <br />UG /L <br />< 0.5 <br />LEAD <br />DISSOLVED <br />UG /L <br />1.4 <br />MERCURY <br />DISSOLVED <br />UG /L <br />< 1 <br />SELENIUM <br />DISSOLVED <br />UG /L <br />< 0.3 <br />SECONDARY <br />IRON <br />DISSOLVED <br />UG /L <br />370 <br />MANGANESE <br />DISSOLVED <br />UG /L <br />8 <br />TRACE METALS <br />MOLYBDENUM <br />TOTAL RECOV <br />UG /L <br />< 50 <br />NUTRIENTS <br />NITROGEN <br />NO3 -NO2 <br />MG /L <br />< 0.1 <br />TABLE : 7 <br />TWENTYMILE COAL COMPANY <br />2011 ANNUAL HYDROLOGY REPORT <br />WATER QUALITY MONITORING DATA <br />Site: T4 (Well TR-4, Well TR-4, Middle Sandstone) DATUM 6308 3 <br />Note : <br />